Synonyms of the word

owing

• adj. Still to be paid; owed as a debt.
• v. present participle of owe.

due

• adj. Owed or owing.
• adj. Appropriate.
• adj. Scheduled; expected.
• adj. Having reached the expected, scheduled, or natural time.
• adj. Owing; ascribable, as to a cause.
• adv. (used with compass directions) Directly; exactly.
• n. Deserved acknowledgment.
• n. (in plural dues) A membership fee.
• n. That which is owed; debt; that which belongs or may be claimed as a right; whatever custom, law, or morality…
• n. Right; just title or claim.

outstanding

• v. present participle of outstand.
• adj. prominent or noticeable; standing out from others.
• adj. exceptionally good; distinguished from others by its superiority.
• adj. projecting outwards.
• adj. unresolved; not settled or finished.
• adj. owed as a debt.

owed

• v. simple past tense and past participle of owe.
• adj. That owes.

undischarged

• adj. not discharged.

unpaid

• adj. Not paid for.
• adj. Of work: done without agreed payment, usually voluntarily.